I use Google Chrome as my browser & had the same problem (circles with lines) I talked to Mike & he told me to refresh my browser. I did what is called a "hard refresh" as well as emptied the cache. It worked perfectly & actually my forums are all a little faster now.
If you are also using Google Chrome, hit the F-12 key, when the screen changes, right click on the refresh button (circular line with arrow at the end located up in the left corner) a drop down box with give you a couple of choices as to how you want to refresh. As I said, I did the hard refresh with the cache emptying ....Hope this helps someone!
Bill